/**
 * Copyright (c) 2011 Alexander De Leon Battista
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package es.upm.oeg.presto.dataaccess;

import net.xeoh.plugins.base.annotations.PluginImplementation;

import com.hp.hpl.jena.query.QueryExecution;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.rdf.model.Model;

import es.upm.oeg.presto.api.DataAcccessAPI;

/**
 * @author Alexander De Leon
 */
@PluginImplementation
public class SparqlDataAccess implements DataAcccessAPI {

	// TODO: inject this
	private final String endpointUri = "http://geo.linkeddata.es/sparql";

	@Override
	public boolean exists(String resourceUri) {
		return !describe(resourceUri).isEmpty();
	}

	@Override
	public Model describe(String resourceUri) {
		QueryExecution execution = QueryExecutionFactory.sparqlService(endpointUri, "DESCRIBE <" + resourceUri + ">");
		// TODO: Handle exceptions
		return execution.execDescribe();
	}

	@Override
	public String getType(String resourceUri) {
		// TODO Auto-generated method stub
		return null;
	}

}
